Congratulations Cachemates on your 43rd anniversary. I remember my wife and my 43rd, 6 years ago.
No you don't have to be old to celebrate 43 years together or 49 and it keeps you young when you do things together such as geocaching.
Getting out on the trail, getting pleanty of healthy exercise, keeping your mind active makes 4 DECADES PLUS not seem so long.
But putting it in Decades does kind of make it sound like a long time.